Spray tank



March 17, w25. 1,530,346

H. D. BINKS SPRAY TANK Filed June 26, 1922 l2 Sheets-Sheet 1 March 17; 1925. 1,530,346 H.- D. BlNKs SPRAY TANK Filed June 2e. 1922 2 sheets-snee; 2

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#ITA

Patented 'Man 17, 1925.

PAI-.ENT "OFFICE,

UNITED STATI-:s

. maar D. BINxs, ornrvnaronnsr, II`.I;INoIs.kl g

SPRAY TANK.

Application illed J'une 26, 1922.y Serial No. 571,051; l

To all v'wlw/m. 'it may concern.'

Beit known that I, HARRY D. BINKS, citizen of the United States, residing at River Forest, in the county7 of Cook and.

State of Illinois, have invented certain new and useful Improvements in a Spray Tank; and I do hereby declare lthe following to be a full, clear, and exact description of the invention, such as will enable others skilled in theart to which ity appertains to make and use the same.

My invention relates to liquid material tanks of the general class commonlyy emtached from the -container; in which the` liquid is forced out of the same through passages which are not likely to clog, and in which a proper sealing of the joint between the head and the container portion of the tank is easily eiected.

AIn employingcompressed air for forcing a liquid such as aint out of a tank, it is important that a equate provisions vshould l be made for agitating the liquid to secure a substantially uniform consistency, that the s `issuing liquid should be duly stramed to prevent its clogging the passages through which it is forced, that the ressure existing within the tank should be own at all times and easily be controlled, and that adequate safety provisions should be made for preventing v the applying of an excessive pressure to the tank by an inexperienced or careless operator. i f

My invention aims to provide a spray tank 'arranged to meet all of these requirements and one in which the various provisions just mentioned are all carried by the head of the tank and removable with the same, so as to facilitate both -the replenishing of the liquid in the tank andthe thorough cleaning of the latter. Furthermore, my 1nvention' aims to accomplish these various objects in`an unusually simple and rugged constructionand one which will permit even an inexperiencedhoperator to make all needed adjustments without difiiculty. It also aims to provide an advantageously constructed valve body for such an appliance. Still further and also more detailed objects will `appear from the following specification and from the accompanying drawings, in which- Fig. 1 is a fragmentpry and enlarged -view of a spray tank embodying my invention, with the major portion of the head and a part of the lower portion of the container, as well as one of the wheels and the foot'of the tank in elevation, and with the other parts in the. central and vertical section.

Fig. 2 is an'enlarged vertical section taken i along the correspondingly numbered line in Fig. 1 throughthe valve body and the adjacent portion of the head.

3 is a horizontal section taken l lthrough the valve body along the line 3--3 of Fig. 2, with the means for controlling the diaphragm valve attached.

Fig. 4 is a vertical section takenalong the line 4-4 of Fig. 2. Fig. 5 is a perspective view ofthe nipple whic affords the guide and seat for the movable member of the adjustable valve.

Fig.- 6 is` a plan view-of the valve body and its fittings.

In the embodiment of the drawings, the

container portion of my tank is desirably mounted on a pair of wheels 1 after the usual manner, with a foot 2 arranged as the third support, and the tank proper has a main container portion comprising a frustoconical casing 3 welded to a rounded bottom 4, which bottom is preferably cupshaped so as to have a rounded interior which will facilitate cleaning. Brazed or welded to the top of the'casing 3 of the container is a ring casting 44 which desirably extends upwardly beyond the casing 3 to aiord protection for the mouth 'of the container, and this mouth portion of the casting has an upwardly open groove for ,receiving ya packing ring 5. Seated on this packing ring with its'outer edge is a head casting 6, which casting desirablyv is ofan inverted cup shape and desirably hasV an upwardly directed ring 't' on it to afford a flat seat for a valve body 8. This valve body is clamped to the head 6 by a ,screw 9 and by a pair of nipples 10 and 11 nected by a coupling 24 to an agitator pipe thorough which extends almost to the bottom 4 of the container and which desirably has its lower end coiled around the lower end of a casing 26 containing a strainer 27. The coiled lower end of the agitator 25 is provided with openings 28 directed towards the bottom of the casing, so. that the compressed air issuing through this pipe will stir up any sediment in the liquid or any heavy portions in the same, thereby insuring a intermingling of the different portions of the liquid which is to be forced out of the tank. The coupling 24 also desirably houses a check valve 29 arranged (as shown for example in Fig. 4) so as to be opened by the pressure of -the downwardlyv passing air and so as to be closed by upward pressure through the agitator pipe to prevent liquid from being forced into the air supply passages of my appliance.

rlhe strainer casing 26 is desirably carried by a paint outlet pipe 30 which is threaded to the nipple 10, this nipple in turn being threaded into the valve body 8 in alinement with a bore 31 which leads to a lateral bore 32 into which the paint outlet nozzle 33 is threaded. By thus making a direct connection as shown in Fig. 2, I reduce the passages pass in issuing through the valve body, thereby likewise reducing the chances of clogging.

The nipple 11 through which the air supply pipe or agitator pipe 25 is connected, is threaded into the valve body 8 in alinement with a vertical bore 63 which leads to the inner end of a lateral bore 34 into which the usual relief valve 35 (here shown as a pop lsafety valve) is threaded. The inner end of the lateral bore 34 is also connected by a port 36 with a chamber 37 in one end of the valve body and this chamber is connected by a partly threaded bore 38 with a' bore 39 extending transversely thereof through the valve body and having itsopposite end portions 40 and 41 respectively threaded for receiving an air inlet cock and an air outlet cock 61.

Threaded into the longitudinal bore 38 adjacent tothe chamber 37 is a regulator valve body 42 which has a valve stem 43 shdably mounted in it, thisstem having a through which the liquid must continuously tend to seat the valve stem so as to shut off the assing of air from the chamber 37 througi grooves 65,y alongside the stem of the valve and through the bore of the thrust member 45 to the air outlet 41.

To effect the desired air connection through the passages just mentioned, I provide means which can be adjusted fro-m the exterior of the valve body and for that purpose desirably employ a diaphragm 46 bearing against the outer end of the valve stem 43 and continuously urged against this diaphragm by a, compression sprin 47 interposed between the diaphragm an the thumb screw 48, the latter screw being threaded through a cap 49 which in turn is threaded into the outer end of the chamber 37 after the manner shown in Fifr. 5.' lVhen the screw 48 is turned backward For loosened to the extent shown in Fig. 5) so as to relieve the pressure of the spring 47, the relatively lighter spring 44 seats the valve and 'shuts olf the air connection from the air inlet 40 to the duct 63 which leads to the agitatorpipe. Upon tightening the screw 48, the spring 47 is compressed, thereby flexing the diaphragm inwardly and opening the valve adjacent to the same, thereby admitting air to the agitator to any desirec extent.

To insure a proper control of the pressure by the operator, I desirably provide a pressure gage 50 threaded into the bore 32 which leads to an extension 51a of the bore into which the screw 9 is threaded, this extension bore 51a being continued upwardly to meet the bore 51 which extends longitudinally of the valve body to the chamber 37.

With the parts thus arranged, the bore 39 affords a direct connection from the air inlet to the air outlet of the appliance, thus permitting the compressed air to be supplied withoutany throttling action to the appliance with which the spray tank is to be used, while the pressure at which air is supplied through the agitator pipe to the container can be varied as. desired. by masupplied to ing for the various parts therefore enables me to accomplish all of the needed purposes by means of a very simple and cheaply constructed valve head.

However, While I have illustrated and described the appliance of my invention as tainer, a cover secured tothe mouth thereof,-

including highly desirable shapes and types of various parts, I do not wish to be limited to the details of the construction and arrangement thus disclosed, it being obvious that the sameA might be modiied in many ways without `departing either from the spirit of my invention or from the' appended claims.

I claim as my invention l 1. A liquid spray tank comprising a cona valve |body seated on the .cover and having bores one of which leads to a gauge Aextending longitudinally of the body and connected to the agitator duct, and an ad- 'ustable valve controlling the said intercepting bore. Y,

3. A spray tank as per claim 2, in which the valveI comprises a perforated stop member and a nipple both threaded into the said longitudinal bore, a valve member slidable in the nipple and having a head adapted to seat on the nipple, a sprin interposed between the stop memberA an the valve member, and an adjustable spring resisting the movement of the valve member I by the aforesaid spring.

,4; A spray tank as per claim 2, in which the valve comprises a perforated stop member and a nipple both threaded into the said longitudinal bore, a valve member slidable in the nipple and having a head adapted to seat on the nipple, a spring interposed between the stop member and the valve memmember yand having its faces respectively subject to external air pressure and to the pressure within the said intercepting bore, and spring means engaging the ldiaphragm on the opposite side from the valve member for resisting a movementl of the valve member by the aforesaid spring.

5. A spray tank as perclaim 2, in which the valve comprises a perforated stop mem-r ber and a nipple both-'threaded into the said ber, a diaphragm bearing against/the valve longitudinal bore, a valve member slidable l in the nipple and having a head adapted to seat on the nipple, a spring interposed between the stop member and the valve member, a diagram bearing against the valve member and having its faces respectively ysubject to external air pressure and to the pressure within the said intercepting bore, and spring means engaging the diaphragm on the opposite side from the valve member for resisting. a movement of thevvalve member kbythe aforesaid spring, the said spring means being adjustable from Athe exterior of the valve body.

Signed at HARRY D. BINKS.

cago, Illinois, June 16th,'k 

